6052601502

Committed 01 Sep 2023 03:07AM UTC coverage: 91.704% (-0.004%) from 91.708%

Build # 6052601502

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push

github

Committed by

web-flow

Commit Message

Merge pull request #3673 from falko-strenzke/refact-sha3

Refactoring SHA3: based on new permutation keccak-fips

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78576 of 85684 relevant lines covered (91.7%)

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66.67

/src/lib/hash/keccak/keccak.h

/*
* Keccak
* (C) 2010 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_KECCAK_H_
#define BOTAN_KECCAK_H_

#include <botan/hash.h>
#include <botan/secmem.h>
#include <botan/internal/keccak_perm.h>
#include <string>

namespace Botan {

/**
* Keccak[1600], the SHA-3 submission without any final bit padding. Not an official NIST SHA-3-derived hash function.
*
* In the terminology of the official SHA-3 specification [1],
* the instantiations of this hash function
* (with the output bit size in brackets) are given as
*
* Keccak1600[224](M) = KECCAK[448] (M, 224)
* Keccak1600[256](M) = KECCAK[512] (M, 256)
* Keccak1600[384](M) = KECCAK[768] (M, 384)
* Keccak1600[512](M) = KECCAK[1024] (M, 512)
*
* i.e., as raw Keccak[c] without any additional final bit padding.
*
* [1] https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf#page=28
*
*/
class Keccak_1600 final : public HashFunction {
   public:
      /**
      * @param output_bits the size of the hash output; must be one of
      *                    224, 256, 384, or 512
      */
      explicit Keccak_1600(size_t output_bits = 512);

      size_t hash_block_size() const override { return m_keccak.byte_rate(); }

      size_t output_length() const override { return m_output_length; }

      std::unique_ptr<HashFunction> new_object() const override;
      std::unique_ptr<HashFunction> copy_state() const override;
      std::string name() const override;
      void clear() override;
      std::string provider() const override;

   private:
      void add_data(const uint8_t input[], size_t length) override;
      void final_result(uint8_t out[]) override;

   private:
      Keccak_Permutation m_keccak;
      size_t m_output_length;
};

}  // namespace Botan

#endif

1	/*
2	* Keccak
3	* (C) 2010 Jack Lloyd
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#ifndef BOTAN_KECCAK_H_
9	#define BOTAN_KECCAK_H_
10
11	#include <botan/hash.h>
12	#include <botan/secmem.h>
13	#include <botan/internal/keccak_perm.h>
14	#include <string>
15
16	namespace Botan {
17
18	/**
19	* Keccak[1600], the SHA-3 submission without any final bit padding. Not an official NIST SHA-3-derived hash function.
20	*
21	* In the terminology of the official SHA-3 specification [1],
22	* the instantiations of this hash function
23	* (with the output bit size in brackets) are given as
24	*
25	* Keccak1600[224](M) = KECCAK[448] (M, 224)
26	* Keccak1600[256](M) = KECCAK[512] (M, 256)
27	* Keccak1600[384](M) = KECCAK[768] (M, 384)
28	* Keccak1600[512](M) = KECCAK[1024] (M, 512)
29	*
30	* i.e., as raw Keccak[c] without any additional final bit padding.
31	*
32	* [1] https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf#page=28
33	*
34	*/
35	class Keccak_1600 final : public HashFunction {	×
36	public:
37	/**
38	* @param output_bits the size of the hash output; must be one of
39	* 224, 256, 384, or 512
40	*/
41	explicit Keccak_1600(size_t output_bits = 512);
42
43	size_t hash_block_size() const override { return m_keccak.byte_rate(); }	2,144✔
44
45	size_t output_length() const override { return m_output_length; }	8,524✔
46
47	std::unique_ptr<HashFunction> new_object() const override;
48	std::unique_ptr<HashFunction> copy_state() const override;
49	std::string name() const override;
50	void clear() override;
51	std::string provider() const override;
52
53	private:
54	void add_data(const uint8_t input[], size_t length) override;
55	void final_result(uint8_t out[]) override;
56
57	private:
58	Keccak_Permutation m_keccak;
59	size_t m_output_length;
60	};
61
62	} // namespace Botan
63
64	#endif

randombit / botan / 6052601502

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